Irish Surnames C

A list of Irish surnames beginning with the letter C



Found in:Clare, Galway, Tipperary

Origin: Gaelic

Cathal is one Irish equivalent of Charles.


Found in:Kilkenny, Laois

Origin: Norman-French

From “de Champagnes”


Variant:O’Kerry, Kerry, Carew

In Irish: Ó Ciardha

Found in:Kerry, Kildare

Origin: Gaelic


Variant:Carville, MacCarvill

In Irish: Ó Cearbhaill

Origin: Gaelic


In Irish: Ó Caiside

Found in:Widespread, Fermanagh, Donegal

Origin: Gaelic


Variant:Clanchy, Glanchy, MacClancy

In Irish: MacFhlannchaidh

Found in:Clare, Leitrim

Origin: Gaelic


Variant:O’Clery, Macalary, MacClery

In Irish: Ó Cleireach

Found in:Ulster

Origin: Gaelic and English

Son of the Clerk. In some cases Clarke is an Anglicised version of Clery but some have ancestors from England, where the name has the same derivation.


Variant:Cleary, Clarke

In Irish: Ó Cleirigh

Found in:Connaught

Origin: Gaelic

Cléireach is the Irish for “clerk”.


In Irish: MacÓda

Found in:Kilkenny, Wexford

Origin: Norman-French


Variant:Coughlin, O’Coughlan, Coughlan, Cohalan, MacCoughlan. .

In Irish: Ó Cochlain

Found in:Cork, Offaly

Origin: Gaelic

Means “cape or hood” in Irish.


In Irish: Ó Cioleáin

Found in:Widespread, West Cork

Origin: Gaelic, English/Norman

Cioleáin means “young hound” or pup. Also an English name of Norman origin.



In Irish: Ó Connacháin

Found in:Ulster

Origin: Gaelic

Means “cape or hood” in Irish.


Variant:Connely, Connolley

In Irish: Ó Conghaile

Found in:Widespread. Galway, Mayo, Cork, Monaghan

Origin: Gaelic

Means “valorous”. An very old Connaught family


Variant:O’Mulconry, Mulconry, Conary, Conree, Conry

In Irish: Ó Conratha

Found in:Clare, Roscommon, Longford

Origin: Gaelic

Means “hound of prosperity”



In Irish: MacConnmhaigh

Found in:Clare, Kerry, County Dublin.

Origin: Gaelic

Means “hound of the plains”.


Variant:Conan, Coonan, O’Cuana, Counihan

In Irish: Ó Cuanaic

Found in:Clare, Galway, West Cork

Origin: Gaelic

Means “handsome”.



In Irish: Ó Corcrain

Found in:Fermanagh, Kerry, Mayo, Offaly

Origin: Gaelic

Means “ruddy”.


Variant:Nangle, Costelloe

Found in:Widespread, Galway, Mayo, Sligo

Origin: Norman

From MacOisdealbh “son of Oistealb”, but originally from the Norman name “de Nangles”



In Irish: Ó Cruadhlaoich

Found in:Cork, Roscommon

Origin: Anglo-Norman

Means “strong hero”.


Variant:Cullion, Culhoun, MacCullen, Cullinane

In Irish: Ó Cuillin

Found in:Kildare, Wexford

Origin: Gaelic

Means “holly tree”.


Variant:Commons, Comyns, Hurley

In Irish: Ó Comáin

Found in:Kerry, Limerick, Mayo

Origin: Gaelic

Comáin means “hurley”. .


In Irish: Ó Corráin

Found in:Galway, Kerry, Waterford


Variant:MacCuirtin, MacCruitin, MacCurtin, Curtayne

In Irish: Ó Cuirtin

Found in:Cork, Dublin, Limerick

Origin: Gaelic

Derived from Cruitín maning “hunchback”.


In Irish: Ó Cíomhsóg, MacIosóg

Found in:Kildare, Meath, Mayo

Origin: Anglo-Norman

Published: August 17, 2008 | Updated: March 31, 2017 | Image Credits

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  • Sighle Cotter says:

    I am trying to trace my great great grandmother. Her name was Marie Claire married to Daniel O Mahony. I believe she was a Huguenot. I have her daughters baptismal cert with their names on it. Dated 1858 Durrus Co.Cork.

  • George Curvin says:

    Hello Everyone,

    I would like to find out more information about my surname and also make contact with other Curvin family members. I hope to make new friends and find out more information about my family name. Thank you for your time.

    Thank You,
    George Curvin

  • audrey says:

    Any info on the last name collins? I know it’s Irish but didn’t know if there a viking link to the name.  Thanks so much!

  • Shane Cronogue says:

    Hi I’m looking for some information into the Cronogue surname..I can go back as far as 1796 in the Flax growers census of Ireland and I found three Cronogue’s living in Drumsna Co.Leitrim.The oldest record of the surname I can find is found only in Co.Leitrim.The Cronogue clan might of been a family living under the rulers of Co.Leitrim (Breffni) called the O’Rourkes is one guess.Or another is that the name could derive from the Irish man made islands called Cránnogs and later anglicized to Cronogue over the centuries. Any more research or info of the origins of this surname would be greatly appreciated. kind regards Shane Cronogue 

  • Ultan Coyle says:

    I think you might be missing Coyle from your list.

  • Dory Romero says:

    My grandmother Hellene left Ireland during the potato famine and we have
    located what appears to be her marriage certificate with the surname listed as
    Cullanne.  Is may be mispelled or mispronounced.  Any help would be appreciated.

  • Kat says:

    I was wondering about the last name Courtney – my great-grandfather’s last name. I know he was born around 1891 and migrated from Ireland to Australia in his early 20’s. I can only find records of the emigration and nothing before that. I heard that some Irish last names were changed by the English? And that before Courtney, it would’ve been Cournan? I THINK just before moving to Australia, him and his family moved to England, which might explain the name change?

  • Dylan says:

    I know that the Costello name actually originated from Spain and that when the armada got destroyed quite a few sailors with the name costello settled in Ireland

  • Rachel says:

    What about the name Caufield, or Caulfield? My great-grandmother’s madein name was Sara/h Caufield and she had told my family that she was from Belfast.

    I’m interested to know if it is even Irish!

    Thank you

    • Katherine says:

      It is indeed an Irish name, and quite a widespread one if not exactly common. It is an English form of a very old Gaelic name (dating back well more than 1000 years) MacCathmhaoil which was translated into Caulfield at the time when the English in Ireland banned Irish names.

      Caulfield is also an Engish name, and that can seem confusing – how can it be English and Irish? In fact that’s a fairly common occurrence. At the time when names were translated into English, they were often translated into multiple different English names, because direct translations did not really exist. Quite often a vaguely similar sounding English name was chosen, and that appears to be what happened with this name.

      That said, given that she was from Belfast, it may be that she was not a Gaelic MacCathmhaoil, but was one of the Caulfield family who were given land in Northern Ireland by Queen Elizabeth during the early 1600’s, and later became the Earls of Charlemont. If you ever make it to Ireland you should visit Mayo, and especially Ceide Fields, which was excavated by Seamus Caulfield, who was a professor of Archeology at University College Dublin.

  • paul says:

    My fathers last name is callaway and my mothers maiden name is cunningham, I know my moms madien name is Irish but is the name callaway irish or english? can someone let me know…Thanks.

  • Martin says:

    It’s a common misconception that “Connolly” is translated as Ó Conghaile. This probably arises from the fact that Patrick Pearse helpfully provided James Connolly with an Irish name for to sign the Proclammation of Independence in 1916 (Séumus Ó Conghaile).  Pearse summered in the Aran Islands, where ‘Conneely’ is often rendered Ó Conghaile (though, originally Mac Conghaile, see “A History of Iar-Chonnaught”, edited by Hardiman, page 27. This is an old family, probably Conmaicne Mara and was also “McNeela” in south Mayo and or “McConneely”, “McCunneela” etc.) Connolly Station is hence, Stáisiún Uí Chonghaile.
    Connolly in east Galway (Síl nAmnchadha Uí Máine i.e. Madden), Meath (Sil Aedh Slaine sept, Uíbh Néill a’ deisceart) and Monaghan are in each case Ó Conghalagh.

    In west Cork, Connolly is Ó Coingheallaigh.
    In Fermanagh, south Mayo and perhaps Wicklow, Ó Conghaile. In Sligo, “Crilly” is often Ac’ Crollaigh or Mac Conghaile.
    In south Galway, Connolly is sometimes Ó Conghaola, a toponymic c.f. Gowla., belonging to the Uíbh Fhiachrach Aidne, I think.

  • Len says:

    I’m interested in the English language form of the surname Cinnchnamhaitha. I’ve just seen it for the first time in my life. It was accompanied by a Scots-English first name, so it may be an introduced name.

  • Eileen (Co Clare says:

    We are trying to find out if anyone has information on my Great Grandmother’s name which was CROASH.  She lived in Wexford, Wellington Bridge area around mid 1800’s.  Has anyone every heard of this name and do they know what was the country of origin on this one. 

    Would appreciate some help!

    Thanks very much

    • Jim says:

      Hello Eileen,

      I believe I may be able to provide some information on your Great Grandmother. If you would like to forward her Christian name to me at I will pass on to you relevant research which I have completed on the Croash family tree.


      Jim Croash
      Dublin 15

    • Joe molloy says:

      Hi Eileen just in reference to your query about the Croash name my Grandmother was a Croash from that area and I would have some info for you if ur still interested, contact me at and if I can be of help to you I will

  • Terry Callaghan says:

    You should remember that the Scots originally came from Ireland and displaced the Picts. Thats why the names and language are similar. There were many to-ings and fro-ings between Larne and Stranraer long before the world Scotland was even thought of.

  • mcfee says:

    i would like a listing of the original surnames of all parts of Ireland and the most common used since the early 1900’s. My last name is Campbell. I’ve been told that I have English, Irish, and Black Dutch in my family history. in a brief study of  the origin of the Campbell name, I found it to be of Scottish origin and not English. Can you give me some info if the name Campbell is a mixture of English, Irish and Scottish or of just one origin? 

    Any information you can provide will be greatly appreciated. Thank you for your time.  Also can you tell me in what part of Ireland the name McFee originated in.  Thank you so much for your time.

    Sandra Campbell.

    • Katherine says:

      Campbell is definitely Scottish. There are Campbells in both Ireland and England, but they would be of Scottish descent.

      McFee is a Scottish/Irish name, found pretty much exclusively in the North of Ireland, mainly around Co Down, sometimes as McAfee. It is from Mac Dhuibhshíthe which means “dark man of peace”, but that does not mean it’s an Irish name – Scots Gaelic is pretty like Irish and the name would be mainly of Scottish origin I’d be fairly sure.

      Most names that are originally Scottish are more common in the North of Ireland, since a lot of Scottish people settled there over the centuries.

      It sounds like you have a lot of Scottish in there! Bear in mind that quite a few people who were of Scottish origin but whose ancestors had settled in Ireland emigrated to the US, so it could be that the Irish connection in your family was actually Scots Irish.

      That’s about all I can tell you – hope it helps.

    • J McAfee says:

      McAfee is a Northern Irish spelling.  The old name was McDuffee.  McAfee and McDuffee are interchangeable.   Most McAfees lived in the area of the Co. Antrim and Co. Derry border in Ulster – Northern Ireland.  McDuffees came off the isle of Islay, Jura and Colonsay, Scotland.   One of the seven clans of Siol Alpin.

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